Ball Mill

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The Handling Materials and Main Types of Ball Mill:

Ball mill is a key equipment for grinding materials, widely used in powder-making production line such as cement, silicate sand, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc.

Ball mill can grind various ores and materials with the dry type or wet type. There are two kinds of ball mills, grate type and overfall type due to different ways of discharging material.

The Interior Structure of Ball Mill:

The machine is composed by feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbing process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The machine is in stable and reliable working condition.

Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.

The Working Principle of Ball Mill:

This machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, drive by outer gear and two hoppers. The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. The hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by the barrel and grind material. After the kibbling in the first hopper, by monolayer partition panel, the material will enter the second hopper, which has plane scale board with steel ball inside to grind material. The powder material will be discharged from the grid plate to finish the grinding.

Model

Shell rotation speed
（r/min）

Ball load
(t)

Feeding size
(mm)

Discharging size
(mm)

Capacity
(t/h)

Motor power
(kw)

Total weight
(t)

Ф900×1800

36-38

1.5

≤20

0.075-0.89

0.65-2

18.5

5.85

Ф900×3000

36

2.7

≤20

0.075-0.89

1.1-3.5

22

6.98

Ф1200×2400

36

3

≤25

0.075-0.6

1.5-4.8

30

13.6

Ф1200×3000

36

3.5

≤25

0.074-0.4

1.6-5

37

14.3

Ф1200×4500

32.4

5

≤25

0.074-0.4

1.6-5.8

55

15.6

Ф1500×3000

29.7

7.5

≤25

0.074-0.4

2-5

75

19.5

Ф1500×4500

27

11

≤25

0.074-0.4

3-6

110

22

Ф1500×5700

28

12

≤25

0.074-0.4

3.5-6

130

25.8

Ф1830×3000

25.4

11

≤25

0.074-0.4

4-10

130

34.5

Ф1830×4500

25.4

15

≤25

0.074-0.4

4.5-12

155

38

Ф1830×6400

24.1

21

≤25

0.074-0.4

6.5-15

210

43

Ф1830×7000

24.1

23

≤25

0.074-0.4

7.5-17

245

43.8

Ф2100×3000

23.7

15

≤25

0.074-0.4

6.5-36

155

45

Ф2100×4500

23.7

24

≤25

0.074-0.4

8-43

245

56

Ф2100×7000

23.7

26

≤25

0.074-0.4

12-48

280

59.5

Ф2200×4500

21.5

27

≤25

0.074-0.4

9-45

280

54.5

Ф2200×6500

21.7

35

≤25

0.074-0.4

14-26

380

61

Ф2200×7000

21.7

35

≤25

0.074-0.4

15-28

380

62.5

Ф2200×7500

21.7

35

≤25

0.074-0.4

15-30

380

64.8

Ф2400×3000

21

23

≤25

0.074-0.4

7-50

245

58

Ф2400×4500

21

30

≤25

0.074-0.4

8.5-60

320

72

Ф2700×4000

20.7

40

≤25

0.074-0.4

22-80

380

95

Ф2700×4500

20.7

48

≤25

0.074-0.4

26-90

480

102

Ф3200×4500

18

65

≤25

0.074-0.4

As per process conditions

630

149

Ф3600×4500

17

90

≤25

0.074-0.4

As per process conditions

850

169

Ф3600×6000

17

110

≤25

0.074-0.4

As per process conditions

1250

198

Ф3600×8500

18

131

≤25

0.074-0.4

45.8-256

1800

260

Ф4000×5000

16.9

121

≤25

0.074-0.4

45-208

1500

230

Ф4000×6000

16.9

146

≤25

0.074-0.4

65-248

1600

242

Ф4000×6700

16.9

149

≤25

0.074-0.4

75-252

1800

249

Ф4500×6400

15.6

172

≤25

0.074-0.4

84-306

2000

280

Ф5030×6400

14.4

216

≤25

0.074-0.4

98-386

2500

320

Ф5030×8300

14.4

266

≤25

0.074-0.4

118-500

3300

403

Ф5500×8500

13.8

338

≤25

0.074-0.4

148-615

4500

525

Ball mills are widely used in production industries, such as cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and ferrous metals and glass ceramics and others. It can grand things in dry-type and wet-type for all kinds of ore and other grindable materials.

The Structure Characteristics of the Ball Mill

The ball mill consists of feeding parts, discharging parts, rotary parts, transmission parts (reducer, small transmission gear, motor, electronic control) and other main parts. The hollow shaft adopts cast steel, and the inner lining of it can be dismantled. The rotary large gear is machined by casting hobbing process, with a wear-resistant lining plate in the barrel, which has the ability of wear resistance. Our machine runs smoothly and has reliable performance. According to the material and discharge way, we can choose dry-type ball mill or wet-type ball mill.

Quick-wear Parts of the Ball Mill

The quick-wear parts of the ball mill mainly refer to the lining boards, the wear and usage time of the liner are related to the cost and production effect of the ball mill. Then how to identify the advantages and disadvantages of the lining boards. We can conclude it mainly from three steps, the first to see is the lining plate casting and smelting process, the next step is to check whether the lining plate quenching and tempering treatment are qualified, and at last, we need to look at the lining board material carefully. At present, the common lining materials in the market are high chromium cast iron, low alloy wear-resistant cast steel and high manganese steel material. These three kind of materials of lining boards of the three kinds of have good wear resistance ability. GUIKUANG machinery welcome you to our factory to inspect the production process of ball mills and the lining plate’s manufacturing techniques.

The Operation Principle of the Ball Mill

The material is entered into the hollow shaft by the feeding device, and then it enters the first warehouse of the ball mill evenly. There are stepped lining plates or corrugated lining plates with different sizes of steel balls inside the warehouse. The cylinder rotates to produce centrifugal force for bringing the steel ball to a certain height and then it falls down. This produces heavy blow and grinding effects to the material. After the rough grinding process, the material enters the second warehouse through a single clapboard. The warehouse is lined with a scale-board with steel balls for further grinding. The powder is discharged by the discharging grate plate to finish the grinding operation.